Prospective Analysis of Massive Integration of Electric Vehicle Chargers and Their Impact on Power Quality in Distribution Networks

Abstract

The increasing presence of electric vehicles (EVs) requires a thorough understanding of their impact on distribution assets. EV chargers are characterized as nonlinear and multi-state loads due to their unique electrical consumption patterns. This paper presents a comprehensive study focused on modelling diverse EV charging units deployed in the industrial, commercial, and residential sectors. To conduct this analysis, a simulation environment utilizing the ETAP tool is employed, taking into account time variations. This approach facilitates the comprehension and anticipation of the effects that EV charging may impose on distribution networks, thereby supporting well-informed decision-making for the adaptation and enhancement of the electrical system. Detailed data on current and voltage from operational EV charging stations were collected to create consumption, current, voltage, and harmonic profiles for these charging units. Subsequently, general models or libraries applicable to Level 1, Level 2 and Level 3 EV chargers available in Colombia were developed. These models underwent rigorous validation and were subjected to a comprehensive analysis using the IEEE 13-bus test system. The research yielded valuable insights and conclusions regarding the integration of EV chargers into the current Colombian distribution systems, as well as the potential impact of adopting these devices on power quality issues within the distribution grid. This study contributes to the improved management of distribution assets, thereby facilitating the integration of sustainable electric mobility in the national electrical system.

Understanding Human Mobility Patterns from Urban Energy Consumption Records: Through Electric Vehicle Charging Records

“…This research has been instrumental in modeling potential grid load under these scenarios, thereby proposing solutions to mitigate the increased demand due to EV charging [2]. The unique electrical consumption patterns of EV chargers have necessitated thorough studies across various sectors [3]. Adding to this, Garwa and Niazi's comprehensive review paper sheds light on both the positive and negative impacts of EVs on power grids, such as the benefits of peak load reduction and ancillary services via V2G technology and the challenges like decreased power quality and increased transformer load due to EV charging [4].…”

An Effective Charging Torque Elimination Method for Dual-Channel Electric-Drive-Reconstructed Onboard Chargers

“…The ability to charge EVs conveniently and efficiently is crucial for their practicality and widespread acceptance by consumers. To prompt the popularization of EVs, the charging issue has been widely researched [2][3][4]. Different from traditional geographically fixed charging piles and additionally installed onboard chargers, electric-drive-reconstructed onboard chargers (EDROCs) [5] feed EV batteries by reutilizing the drivetrain components, which offers a unique advantage in terms of cost and power density, providing a novel design concept for an EV charging system.…”